Merge pull request #1907 from lioncash/attribute
kernel/svc: Implement svcSetMemoryAttribute
This commit is contained in:
bunnei
GitHub
commit
e73dd39413
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@ -254,11 +254,52 @@ static ResultCode SetMemoryPermission(VAddr addr, u64 size, u32 prot) {
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return vm_manager.ReprotectRange(addr, size, converted_permissions);
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}
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static ResultCode SetMemoryAttribute(VAddr addr, u64 size, u32 state0, u32 state1) {
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LOG_WARNING(Kernel_SVC,
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"(STUBBED) called, addr=0x{:X}, size=0x{:X}, state0=0x{:X}, state1=0x{:X}", addr,
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size, state0, state1);
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return RESULT_SUCCESS;
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static ResultCode SetMemoryAttribute(VAddr address, u64 size, u32 mask, u32 attribute) {
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LOG_DEBUG(Kernel_SVC,
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"called, address=0x{:016X}, size=0x{:X}, mask=0x{:08X}, attribute=0x{:08X}", address,
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size, mask, attribute);
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if (!Common::Is4KBAligned(address)) {
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LOG_ERROR(Kernel_SVC, "Address not page aligned (0x{:016X})", address);
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return ERR_INVALID_ADDRESS;
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}
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if (size == 0 || !Common::Is4KBAligned(size)) {
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LOG_ERROR(Kernel_SVC, "Invalid size (0x{:X}). Size must be non-zero and page aligned.",
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size);
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return ERR_INVALID_ADDRESS;
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}
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if (!IsValidAddressRange(address, size)) {
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LOG_ERROR(Kernel_SVC, "Address range overflowed (Address: 0x{:016X}, Size: 0x{:016X})",
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address, size);
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return ERR_INVALID_ADDRESS_STATE;
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}
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const auto mem_attribute = static_cast<MemoryAttribute>(attribute);
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const auto mem_mask = static_cast<MemoryAttribute>(mask);
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const auto attribute_with_mask = mem_attribute | mem_mask;
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if (attribute_with_mask != mem_mask) {
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LOG_ERROR(Kernel_SVC,
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"Memory attribute doesn't match the given mask (Attribute: 0x{:X}, Mask: {:X}",
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attribute, mask);
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return ERR_INVALID_COMBINATION;
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}
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if ((attribute_with_mask | MemoryAttribute::Uncached) != MemoryAttribute::Uncached) {
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LOG_ERROR(Kernel_SVC, "Specified attribute isn't equal to MemoryAttributeUncached (8).");
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return ERR_INVALID_COMBINATION;
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}
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auto& vm_manager = Core::CurrentProcess()->VMManager();
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if (!IsInsideAddressSpace(vm_manager, address, size)) {
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LOG_ERROR(Kernel_SVC,
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"Given address (0x{:016X}) is outside the bounds of the address space.", address);
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return ERR_INVALID_ADDRESS_STATE;
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}
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return vm_manager.SetMemoryAttribute(address, size, mem_mask, mem_attribute);
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}
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/// Maps a memory range into a different range.
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@ -37,7 +37,7 @@ static const char* GetMemoryStateName(MemoryState state) {
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bool VirtualMemoryArea::CanBeMergedWith(const VirtualMemoryArea& next) const {
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ASSERT(base + size == next.base);
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if (permissions != next.permissions || meminfo_state != next.meminfo_state ||
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if (permissions != next.permissions || state != next.state || attribute != next.attribute ||
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type != next.type) {
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return false;
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}
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@ -115,7 +115,7 @@ ResultVal<VMManager::VMAHandle> VMManager::MapMemoryBlock(VAddr target,
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final_vma.type = VMAType::AllocatedMemoryBlock;
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final_vma.permissions = VMAPermission::ReadWrite;
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final_vma.meminfo_state = state;
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final_vma.state = state;
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final_vma.backing_block = std::move(block);
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final_vma.offset = offset;
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UpdatePageTableForVMA(final_vma);
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@ -140,7 +140,7 @@ ResultVal<VMManager::VMAHandle> VMManager::MapBackingMemory(VAddr target, u8* me
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final_vma.type = VMAType::BackingMemory;
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final_vma.permissions = VMAPermission::ReadWrite;
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final_vma.meminfo_state = state;
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final_vma.state = state;
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final_vma.backing_memory = memory;
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UpdatePageTableForVMA(final_vma);
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@ -177,7 +177,7 @@ ResultVal<VMManager::VMAHandle> VMManager::MapMMIO(VAddr target, PAddr paddr, u6
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final_vma.type = VMAType::MMIO;
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final_vma.permissions = VMAPermission::ReadWrite;
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final_vma.meminfo_state = state;
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final_vma.state = state;
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final_vma.paddr = paddr;
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final_vma.mmio_handler = std::move(mmio_handler);
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UpdatePageTableForVMA(final_vma);
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@ -189,7 +189,7 @@ VMManager::VMAIter VMManager::Unmap(VMAIter vma_handle) {
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VirtualMemoryArea& vma = vma_handle->second;
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vma.type = VMAType::Free;
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vma.permissions = VMAPermission::None;
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vma.meminfo_state = MemoryState::Unmapped;
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vma.state = MemoryState::Unmapped;
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vma.backing_block = nullptr;
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vma.offset = 0;
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@ -308,9 +308,10 @@ MemoryInfo VMManager::QueryMemory(VAddr address) const {
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if (IsValidHandle(vma)) {
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memory_info.base_address = vma->second.base;
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memory_info.attributes = ToSvcMemoryAttribute(vma->second.attribute);
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memory_info.permission = static_cast<u32>(vma->second.permissions);
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memory_info.size = vma->second.size;
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memory_info.state = ToSvcMemoryState(vma->second.meminfo_state);
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memory_info.state = ToSvcMemoryState(vma->second.state);
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} else {
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memory_info.base_address = address_space_end;
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memory_info.permission = static_cast<u32>(VMAPermission::None);
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@ -321,6 +322,34 @@ MemoryInfo VMManager::QueryMemory(VAddr address) const {
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return memory_info;
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}
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ResultCode VMManager::SetMemoryAttribute(VAddr address, u64 size, MemoryAttribute mask,
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MemoryAttribute attribute) {
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constexpr auto ignore_mask = MemoryAttribute::Uncached | MemoryAttribute::DeviceMapped;
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constexpr auto attribute_mask = ~ignore_mask;
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const auto result = CheckRangeState(
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address, size, MemoryState::FlagUncached, MemoryState::FlagUncached, VMAPermission::None,
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VMAPermission::None, attribute_mask, MemoryAttribute::None, ignore_mask);
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if (result.Failed()) {
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return result.Code();
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}
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const auto [prev_state, prev_permissions, prev_attributes] = *result;
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const auto new_attribute = (prev_attributes & ~mask) | (mask & attribute);
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const auto carve_result = CarveVMARange(address, size);
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if (carve_result.Failed()) {
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return carve_result.Code();
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}
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auto vma_iter = *carve_result;
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vma_iter->second.attribute = new_attribute;
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MergeAdjacent(vma_iter);
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return RESULT_SUCCESS;
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}
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ResultCode VMManager::MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size, MemoryState state) {
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const auto vma = FindVMA(src_addr);
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@ -364,7 +393,7 @@ void VMManager::LogLayout() const {
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(u8)vma.permissions & (u8)VMAPermission::Read ? 'R' : '-',
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(u8)vma.permissions & (u8)VMAPermission::Write ? 'W' : '-',
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(u8)vma.permissions & (u8)VMAPermission::Execute ? 'X' : '-',
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GetMemoryStateName(vma.meminfo_state));
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GetMemoryStateName(vma.state));
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}
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}
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@ -591,6 +620,66 @@ void VMManager::ClearPageTable() {
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Memory::PageType::Unmapped);
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}
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VMManager::CheckResults VMManager::CheckRangeState(VAddr address, u64 size, MemoryState state_mask,
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MemoryState state, VMAPermission permission_mask,
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VMAPermission permissions,
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MemoryAttribute attribute_mask,
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MemoryAttribute attribute,
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MemoryAttribute ignore_mask) const {
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auto iter = FindVMA(address);
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// If we don't have a valid VMA handle at this point, then it means this is
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// being called with an address outside of the address space, which is definitely
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// indicative of a bug, as this function only operates on mapped memory regions.
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DEBUG_ASSERT(IsValidHandle(iter));
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const VAddr end_address = address + size - 1;
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const MemoryAttribute initial_attributes = iter->second.attribute;
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const VMAPermission initial_permissions = iter->second.permissions;
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const MemoryState initial_state = iter->second.state;
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while (true) {
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// The iterator should be valid throughout the traversal. Hitting the end of
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// the mapped VMA regions is unquestionably indicative of a bug.
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DEBUG_ASSERT(IsValidHandle(iter));
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const auto& vma = iter->second;
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if (vma.state != initial_state) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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if ((vma.state & state_mask) != state) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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if (vma.permissions != initial_permissions) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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if ((vma.permissions & permission_mask) != permissions) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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if ((vma.attribute | ignore_mask) != (initial_attributes | ignore_mask)) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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if ((vma.attribute & attribute_mask) != attribute) {
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return ERR_INVALID_ADDRESS_STATE;
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}
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if (end_address <= vma.EndAddress()) {
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break;
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}
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++iter;
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}
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return MakeResult(
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std::make_tuple(initial_state, initial_permissions, initial_attributes & ~ignore_mask));
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}
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u64 VMManager::GetTotalMemoryUsage() const {
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LOG_WARNING(Kernel, "(STUBBED) called");
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return 0xF8000000;
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@ -6,6 +6,7 @@
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#include <map>
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#include <memory>
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#include <tuple>
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#include <vector>
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#include "common/common_types.h"
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#include "core/hle/result.h"
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@ -43,6 +44,88 @@ enum class VMAPermission : u8 {
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ReadWriteExecute = Read | Write | Execute,
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};
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constexpr VMAPermission operator|(VMAPermission lhs, VMAPermission rhs) {
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return static_cast<VMAPermission>(u32(lhs) | u32(rhs));
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}
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constexpr VMAPermission operator&(VMAPermission lhs, VMAPermission rhs) {
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return static_cast<VMAPermission>(u32(lhs) & u32(rhs));
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}
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constexpr VMAPermission operator^(VMAPermission lhs, VMAPermission rhs) {
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return static_cast<VMAPermission>(u32(lhs) ^ u32(rhs));
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}
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constexpr VMAPermission operator~(VMAPermission permission) {
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return static_cast<VMAPermission>(~u32(permission));
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}
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constexpr VMAPermission& operator|=(VMAPermission& lhs, VMAPermission rhs) {
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lhs = lhs | rhs;
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return lhs;
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}
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constexpr VMAPermission& operator&=(VMAPermission& lhs, VMAPermission rhs) {
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lhs = lhs & rhs;
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return lhs;
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}
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constexpr VMAPermission& operator^=(VMAPermission& lhs, VMAPermission rhs) {
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lhs = lhs ^ rhs;
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return lhs;
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}
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/// Attribute flags that can be applied to a VMA
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enum class MemoryAttribute : u32 {
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Mask = 0xFF,
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/// No particular qualities
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None = 0,
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/// Memory locked/borrowed for use. e.g. This would be used by transfer memory.
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Locked = 1,
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/// Memory locked for use by IPC-related internals.
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LockedForIPC = 2,
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/// Mapped as part of the device address space.
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DeviceMapped = 4,
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/// Uncached memory
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Uncached = 8,
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};
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constexpr MemoryAttribute operator|(MemoryAttribute lhs, MemoryAttribute rhs) {
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return static_cast<MemoryAttribute>(u32(lhs) | u32(rhs));
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}
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constexpr MemoryAttribute operator&(MemoryAttribute lhs, MemoryAttribute rhs) {
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return static_cast<MemoryAttribute>(u32(lhs) & u32(rhs));
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}
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constexpr MemoryAttribute operator^(MemoryAttribute lhs, MemoryAttribute rhs) {
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return static_cast<MemoryAttribute>(u32(lhs) ^ u32(rhs));
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}
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constexpr MemoryAttribute operator~(MemoryAttribute attribute) {
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return static_cast<MemoryAttribute>(~u32(attribute));
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}
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constexpr MemoryAttribute& operator|=(MemoryAttribute& lhs, MemoryAttribute rhs) {
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lhs = lhs | rhs;
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return lhs;
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}
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constexpr MemoryAttribute& operator&=(MemoryAttribute& lhs, MemoryAttribute rhs) {
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lhs = lhs & rhs;
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return lhs;
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}
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constexpr MemoryAttribute& operator^=(MemoryAttribute& lhs, MemoryAttribute rhs) {
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lhs = lhs ^ rhs;
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return lhs;
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}
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constexpr u32 ToSvcMemoryAttribute(MemoryAttribute attribute) {
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return static_cast<u32>(attribute & MemoryAttribute::Mask);
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}
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// clang-format off
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/// Represents memory states and any relevant flags, as used by the kernel.
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/// svcQueryMemory interprets these by masking away all but the first eight
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@ -174,6 +257,16 @@ struct PageInfo {
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* also backed by a single host memory allocation.
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*/
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struct VirtualMemoryArea {
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/// Gets the starting (base) address of this VMA.
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VAddr StartAddress() const {
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return base;
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}
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/// Gets the ending address of this VMA.
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VAddr EndAddress() const {
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return base + size - 1;
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}
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/// Virtual base address of the region.
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VAddr base = 0;
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/// Size of the region.
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@ -181,8 +274,8 @@ struct VirtualMemoryArea {
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VMAType type = VMAType::Free;
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VMAPermission permissions = VMAPermission::None;
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/// Tag returned by svcQueryMemory. Not otherwise used.
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MemoryState meminfo_state = MemoryState::Unmapped;
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MemoryState state = MemoryState::Unmapped;
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MemoryAttribute attribute = MemoryAttribute::None;
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// Settings for type = AllocatedMemoryBlock
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/// Memory block backing this VMA.
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@ -299,6 +392,19 @@ public:
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///
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MemoryInfo QueryMemory(VAddr address) const;
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/// Sets an attribute across the given address range.
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///
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/// @param address The starting address
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/// @param size The size of the range to set the attribute on.
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/// @param mask The attribute mask
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/// @param attribute The attribute to set across the given address range
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///
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/// @returns RESULT_SUCCESS if successful
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/// @returns ERR_INVALID_ADDRESS_STATE if the attribute could not be set.
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///
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ResultCode SetMemoryAttribute(VAddr address, u64 size, MemoryAttribute mask,
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MemoryAttribute attribute);
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/**
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* Scans all VMAs and updates the page table range of any that use the given vector as backing
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* memory. This should be called after any operation that causes reallocation of the vector.
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@ -435,6 +541,35 @@ private:
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/// Clears out the page table
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void ClearPageTable();
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using CheckResults = ResultVal<std::tuple<MemoryState, VMAPermission, MemoryAttribute>>;
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/// Checks if an address range adheres to the specified states provided.
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///
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/// @param address The starting address of the address range.
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/// @param size The size of the address range.
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/// @param state_mask The memory state mask.
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/// @param state The state to compare the individual VMA states against,
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/// which is done in the form of: (vma.state & state_mask) != state.
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/// @param permission_mask The memory permissions mask.
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/// @param permissions The permission to compare the individual VMA permissions against,
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/// which is done in the form of:
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/// (vma.permission & permission_mask) != permission.
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/// @param attribute_mask The memory attribute mask.
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/// @param attribute The memory attributes to compare the individual VMA attributes
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/// against, which is done in the form of:
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/// (vma.attributes & attribute_mask) != attribute.
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/// @param ignore_mask The memory attributes to ignore during the check.
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///
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/// @returns If successful, returns a tuple containing the memory attributes
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/// (with ignored bits specified by ignore_mask unset), memory permissions, and
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/// memory state across the memory range.
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/// @returns If not successful, returns ERR_INVALID_ADDRESS_STATE.
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///
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CheckResults CheckRangeState(VAddr address, u64 size, MemoryState state_mask, MemoryState state,
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VMAPermission permission_mask, VMAPermission permissions,
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MemoryAttribute attribute_mask, MemoryAttribute attribute,
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MemoryAttribute ignore_mask) const;
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/**
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* A map covering the entirety of the managed address space, keyed by the `base` field of each
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* VMA. It must always be modified by splitting or merging VMAs, so that the invariant
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